package com.dyylearn.pkg.modifier;

public class A {
    public int n1 = 100;
    protected int n2 = 200;
    int n3 = 300;
    private int n4 = 400;

    public void m1() {
        System.out.println("n1=" + n1 + " n2=" + n2 + " n3=" + n3 + " n4=" + n4);
    }
    protected void m2() {}
    void m3() {}
    private void m4() {}

    public void hi() {
        //在同一个类中，可以访问public, private, protected, 默认
        m1();
        m2();
        m3();
        m4();
    }
}
